From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 5C3976B0082 for ; Wed, 30 Sep 2009 12:14:55 -0400 (EDT) Subject: Re: [PATCH 00/80] Kernel based checkpoint/restart [v18] References: <1253749920-18673-1-git-send-email-orenl@librato.com> <20090924154139.2a7dd5ec.akpm@linux-foundation.org> <20090928163704.GA3327@us.ibm.com> <4AC20BB8.4070509@free.fr> <87iqf0o5sf.fsf@caffeine.danplanet.com> <4AC38477.4070007@free.fr> From: Dan Smith Date: Wed, 30 Sep 2009 09:29:23 -0700 In-Reply-To: <4AC38477.4070007@free.fr> (Daniel Lezcano's message of "Wed\, 30 Sep 2009 18\:16\:55 +0200") Message-ID: <87eipoo0po.fsf@caffeine.danplanet.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org To: Daniel Lezcano Cc: "Serge E. Hallyn" , linux-api@vger.kernel.org, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , torvalds@linux-foundation.org, mingo@elte.hu, xemul@openvz.org List-ID: DL> If the checkpoint is done from the kernel, why the restart DL> wouldn't be in the kernel too ? I think thus far we have taken the approach of "if it can be done reasonably in userspace, then do it there" right? Setup of the network devices is easy to do in userspace, allows more flexibility from a policy standpoint, and ensures that all existing security checks are performed. Also, migration may be easier if the userspace bits can call custom hooks allowing for routing changes and other infrastructure-specific operations. DL> Is there any documentation about the statefile format I can use if DL> I want to implement myself an userspace CR solution based on this DL> kernel patchset ? See linux-cr/include/linux/checkpoint_hdr.h and user-cr/restart.c. -- Dan Smith IBM Linux Technology Center email: danms@us.ibm.com -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org